Ofonime O. Essien, MD

Medicare activity in 2024

Official CMS public-use data for Ofonime O. Essien, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Most frequent services

1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)80 services
2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)35 services
3. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)23 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

• High blood pressure72%
• High cholesterol53%
• Diabetes42%
• Arthritis35%
• Chronic kidney disease27%
• Ischemic heart disease19%

Hospitals where Ofonime O. Essien works

Medicare's Facility Affiliation Data lists Ofonime O. Essien at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

• Ascension Columbia St Marys Hospital MilwaukeeMilwaukee, WI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 520051
• Ascension SE Wisconsin HospitalMilwaukee, WI · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 520136

Practice locations

Addresses where Ofonime O. Essien is enrolled with Medicare (CMS data updated October 2, 2026).

• 2311 N Prospect AveMilwaukee, WI 53211 (414) 319‑3000

Group practices

Medicare enrollment lists Ofonime O. Essien as a member of this group (CMS data updated October 2, 2026).

• Columbia St Marys Hospital Milwaukee Inc306 clinicians in the group

Specialties

• Family Practiceprimary

Find other Family Practice doctors in Wisconsin →

Other family doctors in Milwaukee

Clinicians with the same Medicare primary specialty in Milwaukee, WI — not a recommendation.

• Alyssa M. Mohorek, MD
• Sarah E. Pierce, MD
• Sabrina L. Hofmeister, DO
• Maggie K. Zaki, MD
• Rachel A. Eash-Scott, MD
• Philip L. Goolsby, MD
• Jeffrey D. Gentile, MD
• John R. Weber, MD

All family doctors in Milwaukee →

Other clinicians in Columbia St Marys Hospital Milwaukee Inc

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• Lucy Stone, MD
• Sami Roumani, MD
• Srutha Rajkumar, MD
• Chad J. Stepke, MD
• Ann M. Stoica, NP
• Matthew Carbonelli

Clinician information

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
6. Medicare Care Compare — official Medicare tool to look up clinicians